diff options
Diffstat (limited to '')
| -rw-r--r-- | Game/Code/lib/midi/MidiScope.pas | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/Game/Code/lib/midi/MidiScope.pas b/Game/Code/lib/midi/MidiScope.pas new file mode 100644 index 00000000..0caa430f --- /dev/null +++ b/Game/Code/lib/midi/MidiScope.pas @@ -0,0 +1,193 @@ +{
+ Shows a large black area where midi note/controller events are shown
+ just to monitor midi activity (for the MidiPlayer)
+
+ version 1.0 first release
+
+ for comments/bugs
+ F.Bouwmans
+ fbouwmans@spiditel.nl
+
+ if you think this component is nice and you use it, sent me a short email.
+ I've seen that other of my components have been downloaded a lot, but I've
+ got no clue wether they are actually used.
+ Don't worry because you are free to use these components
+}
+
+unit MidiScope;
+
+interface
+
+uses
+ Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs;
+
+type
+ TMidiScope = class(TGraphicControl)
+ private
+ { Private declarations }
+ protected
+ { Protected declarations }
+ notes : array[0..15,0..127] of integer;
+ controllers : array[0..15,0..17] of integer;
+ aftertouch : array[0..15,0..127] of integer;
+
+ selectedChannel : integer;
+
+ procedure PaintSlide(ch,pos,val: integer);
+
+ procedure NoteOn(channel, note, speed : integer);
+ procedure Controller(channel,number,value : integer);
+ procedure AfterTch(channel, note, value : integer);
+
+ public
+ { Public declarations }
+ constructor Create(AOwner: TComponent); override;
+ procedure MidiEvent(event,data1,data2 : integer);
+ procedure Paint; override;
+ published
+ { Published declarations }
+ end;
+
+
+procedure Register;
+
+const
+ BarHeight = 16;
+ BarHeightInc = BarHeight+2;
+ BarWidth = 3;
+ BarWidthInc = BarWidth+1;
+ HeightDiv = 128 div BarHeight;
+
+implementation
+
+uses Midicons;
+
+procedure Register;
+begin
+ RegisterComponents('Synth', [TMidiScope]);
+end;
+
+constructor TMidiScope.Create(AOwner: TComponent);
+var
+ i,j : integer;
+begin
+ inherited Create(AOwner);
+ Height := BarHeightinc * 16 + 4;
+ Width := 147*BarWidthInc + 4 + 20; // for channel number
+ for i := 0 to 15 do
+ begin
+ for j := 0 to 127 do
+ begin
+ notes[i,j] := 0;
+ aftertouch[i,j] := 0;
+ end;
+ end;
+ for i := 0 to 17 do
+ begin
+ for j := 0 to 15 do
+ controllers[i,j] := 0;
+ end;
+end;
+
+procedure TMidiScope.PaintSlide(ch,pos,val: integer);
+var x,y:integer;
+begin
+ Canvas.Brush.Color := clBlack;
+ Canvas.Pen.color := clBlack;
+ x := pos * BarWidthInc + 2;
+ y := 2 + ch * BarHeightInc;
+ Canvas.Rectangle(x, y, x+BarWidthInc, y+BarHeightInc);
+ Canvas.Brush.Color := clGreen;
+ Canvas.Pen.Color := clGreen;
+ Canvas.Rectangle(x, y + (BarHeight - (val div HeightDiv )), x + BarWidth, y + BarHeight)
+end;
+
+procedure TMidiScope.Paint;
+var i,j : integer;
+x : integer;
+begin
+ Canvas.Brush.color := clBlack;
+ Canvas.Rectangle(0,0,Width,Height);
+ Canvas.Pen.Color := clGreen;
+ x := 128*BarWidthInc+2;
+ Canvas.MoveTo(x,0);
+ Canvas.LineTo(x,Height);
+ x := 148*BarWIdthInc+2;
+ canvas.Font.Color := clGreen;
+ for i := 0 to 15 do
+ Canvas.TextOut(x,((i+1)*BarHeightInc) - Canvas.font.size-3,IntToStr(i+1));
+ canvas.Pen.color := clBlack;
+ begin
+ for j := 0 to 127 do
+ begin
+ PaintSlide(i,j,notes[i,j]);
+ end;
+ for j := 0 to 17 do
+ begin
+ PaintSlide(i,j+129,controllers[i,j]);
+ end;
+ end;
+end;
+procedure TMidiScope.NoteOn(channel, note, speed : integer);
+begin
+ notes[channel,note] := speed;
+ PaintSlide(channel,note,notes[channel,note]);
+end;
+procedure TMidiScope.AfterTch(channel, note, value : integer);
+begin
+ aftertouch[channel,note] := value;
+end;
+
+procedure TMidiScope.Controller(channel,number,value : integer);
+var i : integer;
+begin
+ if number < 18 then
+ begin
+ controllers[channel,number] := value;
+ PaintSlide(channel,number+129,value);
+ end
+ else if number >= $7B then
+ begin
+ // all notes of for channel
+ for i := 0 to 127 do
+ begin
+ if notes[channel,i] > 0 then
+ begin
+ notes[channel,i] := 0;
+ PaintSlide(channel,i,0);
+ end;
+ end;
+ end;
+end;
+
+procedure TMidiScope.MidiEvent(event,data1,data2 : integer);
+begin
+ case (event AND $F0) of
+ MIDI_NOTEON :
+ begin
+ NoteOn((event AND $F),data1,data2);
+ end;
+ MIDI_NOTEOFF:
+ begin
+ NoteOn((event AND $F),data1,0);
+ end;
+ MIDI_CONTROLCHANGE :
+ begin
+ Controller((event AND $F),data1,data2);
+ end;
+ MIDI_CHANAFTERTOUCH:
+ begin
+ Controller((Event AND $F),16,Data1);
+ end;
+ MIDI_PITCHBEND:
+ begin
+ begin
+ Controller((Event AND $F),17,data2);
+ end;
+ end;
+ MIDI_KEYAFTERTOUCH:
+ begin
+ end;
+ end;
+end;
+end.
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